260646220 has 48 divisors (see below), whose sum is σ = 563270400. Its totient is φ = 101255616.

The previous prime is 260646187. The next prime is 260646223. The reversal of 260646220 is 22646062.

It is not an unprimeable number, because it can be changed into a prime (260646223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170379 + ... + 171901.

It is an arithmetic number, because the mean of its divisors is an integer number (11734800).

Almost surely, 2^260646220 is an apocalyptic number.

260646220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260646220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281635200).

260646220 is an abundant number, since it is smaller than the sum of its proper divisors (302624180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

260646220 is a wasteful number, since it uses less digits than its factorization.

260646220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1772 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 260646220 is about 16144.5414924054. The cubic root of 260646220 is about 638.7787746990.

The spelling of 260646220 in words is "two hundred sixty million, six hundred forty-six thousand, two hundred twenty".